Grindstone tool-holder



(No Model.)

A. H.ODIGK. GRINDSTONE TOOL HOLDER No. 422,743. Patented Mar. 4, 1890.

/N Tof? i 44% W/TNESSES:

UNITED STATES PATENT OFFICE.

ALEXANDER II. DICK, OF CRAMERS HILL, NEW JERSEY.

GRINDSTCNE TOOL-HOLDER.

SPECIFICATION forming part of Letters Patent No. 422,743, dated March 4,1890.

Application filed November 2S, 1889.` Serial No. 331,352. (No model.)

To all whom, it may concern:

Be it known that I, ALEXANDER 1-1. DICK, of Cralners Hill, in. thecounty of Camden and State of New J ersey,haveinvented a new andImproved Grindstone Tool-Holder, of which lie following' is a full,clear, and exact descrip- Ion.

The invention relates to grindstone toolholders such as shown anddescribed in the United States Letters Patent No. 411,217, granted to meSeptember 17, 1889.

The object of the present invention is to provide a new and improvedgrindstone toolholder which is simple and durable in construction,permits of grinding any desired bevel on the tool, and allows of movingthe tool transversely across the-periphery of the stone, so that theformer can be ground conveniently.

The invention consists of certain parts and details and combinations ofthe saine, as will be fully described hereinafter, and then pointed outin the claims.

Reference is to be had to the accompanying drawlngs, forming a part ofthis specification, 1n which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a side elevation of the improveT ment as applied and withparts in section. Fig. 2 is a plan view of the same. Fig. 3 is atransverse section of part of the improvement on the'line so :tofFig. 1. Figt is a sectional p lan View of part of the improvement on theline y y of Fig. l, and Fig. 5 is an end elevation of the tool-clamp.

.The improved tool-holder A. is provided with a bed-plate B, secured byscrews, nails, or other means on one end of Ithe grindstoneframe C,supporting in the usual manner the grlndstone D. The bedplate B isprovided In Its outer end with a slot E, and it supports the post F,provided with a downwardly-extending screw-rod Gf, lpassing through saidslot E, and on which screws a nut G', screw- Ing against the under sideof the bed-plate B, to clamp the post F in any desired position 011 theouter end of theV bed-plate B. The post E is provided with theupwardlyextending pin' F on which is mounted to turn a sleeve Il,adapted to be secured in any desired position on the said pin F by aeetn screw H. The upper end of the sleeve, Il is preferably connectedwith a second sleeve I, in which is iitted to turn a pin J of an arm J,supporting on its front end a tool-clamp K, for holding the tool-blade Lin place and to the grindstone D. The pin J of the larm J can be securedin place in the sleeve I by means of a set-screw I, screwing in the saidsleeve.

The clamp K is provided with two clamping-arms K and K2, each providedon its outer end With a downwardlyextending flange K3, between whichiianges the toolblade L is placed, the back of the tool-blade restingagainst the under side of the transversely-extending bar J 3, formed onthe arm J and carrying the clamping-arms K and K2. Each of the latter isprovided with a trans-l versely-extending slot, through which passes thebolt K4, for clamping the clamping-arms K and K2 in position on the barJ 3 after the tool-blade L is placed between the iianges K3 of the saidarms. Each of the arms K and wardly-extending lug K5, engaging acorrespondingly-shaped groove at the rear of the transversely-extendingbar J3, so as to hold the said clamping-arms K and K2 in place on thebar. I

The handle end of the tool-blade L is supported on a support N, providedon its upper end with lugs O, forming a fork, through Which passes a barP, provided on its top with a series of notches P and secured to theunder side of the arm J. The notches P are adapted to be engaged by atransverselyextending pin O', secured to the lugs 0 of' the said supportN. By lifting the latter it can be moved forward or backward. on thesaid bar P and dropped with its pin O` in any one of the notches P inthe said bar,'according to the length of the tool held by the clamp K.The support N is provided in its front with a transversely-extendingnotch N', adapted to receive the back end. of the tool-blade, and isalso provided with a spherical recess N2, adapted to receive the handleend of the tool, if the latter is provided with a handle.

On the free end of the arm J is held a transversely-extendin g handle J2, for conveniently moving the arm J up or down or sidewise whengrinding the tool-blade.

,The device is used as follows: The support IOO N is adj usted on thenotched bar P according to the length of the tool to be ground. Theblade L of the tool is clamped between the flanges K3 of theclamping-arms K and K2, and rests with its back end either in the notchN or the recess N2 of the support N. The cutting-edge of the tool Listhen brought in contact with the periphery of the grindstone D, theoperator taking hold of the handle J 2 of the pivoted arm J, andpressing the same downward with more or less force t hold the tool withmore or less force in contact With the grindstone D, which is rotated inthe usual manner. IVhen the set-screwr H is loosened, the operator canconveniently vmove the arm J sidewise, so that the tool is movedcrosswise on the periphery of the grindstone D, saidu.. the pivotalconnection between the sleeves I and II permitting said movement. Byloosening the set-screw I the arm J may be turned in the sleeveI so thatthe tool-blade L Will be held at an angle to the grindstone D forgrinding an angular edge. ItV will thus be seen that bythe connectionot' the pivoted arm J with the post F the arm J is made universal in itsmovement-that is, it can be moved up or down or sidewise, as desired.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. In a grindstone tool-holder, the combination, With an arm carrying atool-clamp at its end, of a support adj ustably mounted on the said armand constructed to receive and support the end of the tool carried bythe clamp, substantially as described.

2. In a grindstone tool-holder, the combil nation, with the arm J,provided with the notched bar P and carrying a tool-clampat its'end, ofthe support N, provided With the lugs O, the pin O, secured to the lugs,the notch N', and a recess N2, substantially as herein shown anddescribed.

3. In a grindstone tool-holder, the combination, With a bed-plate and apost secured thereto, of an arm connected to the post by a universaljoint, a tool-clamp on the end of the arm, and a support adjustablymountedl the notched bar P, the tool-clamp K, secured to thetransversevbar .J3 of varm J, and "the su pport N on the notched bar P,substantially as herein shown and described.

5. In a grindstone tool-holder, the combi. nation, with a bed-,plate anda post adj ustably secured thereto, of a sleeve adj ustably mounted onthe post, a second sleeve pivoted to the first-named sleeve, anarmadjustably secured in the second sleeve, a tool-clamp ou the end of thearm, and asupportfor the end of the tool adj ustably mounted on saidarm, substantially as herein shown and described.

6. In a grindstone tool-holder, the combination, with the arm J,provided Withthe transversely-extending bar J 3, of the clamping-arms KK2, each' provided on its outer end with the downwardly-extending.{iangeK3 and With the downwardly-extending lug K5 on its rear end, and thebolt. K-, substantially as herein shown and described.

ALEXANDER H. DICK.; NVitnesses:

JOHN C. ZANE, BENJ. MUNsoN.

ssA

